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POMVC5, Web API 2 and Ninject
 

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  1. POMVC5, Web API 2 and Ninject
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    <p>I have created a new MVC5 project with Web API 2, I then added the Ninject.MVC3 package from NuGet.</p> <p>Constructor injection is working fine for the MVC5 controllers, but i am getting an error when trying to use it with the Web API Controllers.</p> <blockquote> <p>An error occurred when trying to create a controller of type 'UserProfileController'. Make sure that the controller has a parameterless public constructor.</p> </blockquote> <p>Constructor for working MVC5 controller:</p> <pre class="lang-cs prettyprint-override"><code>public class HomeController : Controller { private IMailService _mail; private IRepository _repo; public HomeController(IMailService mail, IRepository repo) { _mail = mail; _repo = repo; } } </code></pre> <p>Constructor for non-working Web API Controller:</p> <pre class="lang-cs prettyprint-override"><code>public class UserProfileController : ApiController { private IRepository _repo; public UserProfileController(IRepository repo) { _repo = repo; } } </code></pre> <p>Below is the full NinjectWebCommon.cs file:</p> <pre class="lang-cs prettyprint-override"><code>[assembly: WebActivator.PreApplicationStartMethod(typeof(DatingSite.App_Start.NinjectWebCommon), "Start")] [assembly: WebActivator.ApplicationShutdownMethodAttribute(typeof(DatingSite.App_Start.NinjectWebCommon), "Stop")] namespace DatingSite.App_Start { using System; using System.Web; using Microsoft.Web.Infrastructure.DynamicModuleHelper; using Ninject; using Ninject.Web.Common; using DatingSite.Services; using DatingSite.Data; public static class NinjectWebCommon { private static readonly Bootstrapper bootstrapper = new Bootstrapper(); /// &lt;summary&gt; /// Starts the application /// &lt;/summary&gt; public static void Start() { DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule)); DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule)); bootstrapper.Initialize(CreateKernel); } /// &lt;summary&gt; /// Stops the application. /// &lt;/summary&gt; public static void Stop() { bootstrapper.ShutDown(); } /// &lt;summary&gt; /// Creates the kernel that will manage your application. /// &lt;/summary&gt; /// &lt;returns&gt;The created kernel.&lt;/returns&gt; private static IKernel CreateKernel() { var kernel = new StandardKernel(); kernel.Bind&lt;Func&lt;IKernel&gt;&gt;().ToMethod(ctx =&gt; () =&gt; new Bootstrapper().Kernel); kernel.Bind&lt;IHttpModule&gt;().To&lt;HttpApplicationInitializationHttpModule&gt;(); RegisterServices(kernel); return kernel; } /// &lt;summary&gt; /// Load your modules or register your services here! /// &lt;/summary&gt; /// &lt;param name="kernel"&gt;The kernel.&lt;/param&gt; private static void RegisterServices(IKernel kernel) { #if DEBUG kernel.Bind&lt;IMailService&gt;().To&lt;MockMailService&gt;().InRequestScope(); #else kernel.Bind&lt;IMailService&gt;().To&lt;MailService&gt;().InRequestScope(); #endif kernel.Bind&lt;SiteContext&gt;().To&lt;SiteContext&gt;().InRequestScope(); kernel.Bind&lt;IRepository&gt;().To&lt;Repository&gt;().InRequestScope(); } } } </code></pre>
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    1. PTQuestion
    1. USAlborz
    1. USDeclan
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    1. COThe message means that injection isn't registered correctly for WebAPI. I suspect [something like this](http://www.peterprovost.org/blog/2012/06/19/adding-ninject-to-web-api/) may be required for MVC5 too.
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      1. POMVC5, Web API 2 and Ninject
      1. USJoachim Isaksson
    2. CO@JoachimIsaksson i Suspect the same thing, would you know what I need to do, to register this?
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      1. POMVC5, Web API 2 and Ninject
      1. USDeclan
    3. CO@Declan ... Joachim's link tells you what needs to be done, the only difference I see in CreateKernel is that you do not have this line: GlobalConfiguration.Configuration.DependencyResolver = new NinjectDependencyResolver(kernel);
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      1. POMVC5, Web API 2 and Ninject
      1. USJack
 

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